Extreme Inspector Material Preview Lag

[Waffle1434]

The inspector for MeshRenderers that have materials is extremely laggy (0.5s lagspikes) and evident that something evil is happening.
I can see splats in the material's autogenerated preview and they move around when the inspector refreshes.
I can hear their screams as they cry out from the 32x32px prison that can't and probably shouldn't contain them.
The moment the material is removed or the inspector window is closed, the lag goes away.

[smallfly]

I have a similar issue. And it makes the Editor crash, if the Inspector is visible.

[aras-p]

Are both of you using URP by chance?

[smallfly]

Yes I am. Unity 2022.3.9f1.

[smallfly]

I pulled the latest version and the issue seems to be fixed. Thanks!

[Waffle1434]

Yes I was using URP